Capacitive electrodes based on a combination of activated carbon and graphene
Nurbolat S. Gabdullin M. Kalkozova Z. Mirzaeian M. Abdullin K.
27 October 2022al-Farabi Kazakh State National University
Physical Sciences and Technology
2022#9Issue 218 - 24 pp.
As an important element of energy storage systems, Supercapacitors are energy storage devices with high power density. The optimal materials and designs for supercapacitors are currently being studied very intensively, and despite many years of research in this area, the development of electrode materials with optimal properties problem remains very relevant. In order to ensure their high efficiency, along with a high specific capacitance, it is important to lower their series resistance. Carbon materials with a high specific surface area have been widely used as potential electrode material for supercapacitors, however their insufficiently low electrical resistivity limits the energy and power density of the device. Therefore, for optimizing the energy storage and power capability of supercapacitors, development of composite materials electrodes with optimized properties and low electric resistance is crucial. In this article, composite electrodes based on a combination of activated carbon and graphene are obtained and their properties are investigated. The capacitive performance of the composite electrodes is tested in an electrochemical cell and their advantage for lowering the electrical resistance of the device is shown.
carbon , electrodes , energy storage , graphene , supercapacitors
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Almaty University of Power Engineering and Telecommunication, Almaty, Kazakhstan
Al-Farabi Kazakh National University, Almaty, Kazakhstan
Kazakh-British Technical University, Almaty, Kazakhstan
School of Computing, Engineering and Physical Sciences, University of the West of Scotland, Paisley, United Kingdom
Almaty University of Power Engineering and Telecommunication
Al-Farabi Kazakh National University
Kazakh-British Technical University
School of Computing
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